Home / 200,122.72-300,197.76-66,997.60

Finding the Fourth Proportional to 200,122.72, 300,197.76 and 66,997.60

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Solution

The fourth proportional to 200,122.72, 300,197.76 and 66,997.60 is: 100,500.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,122.72 : 300,197.76 = 66,997.60 : x
  2. Step 2: Convert to fraction form
    200,122.72/300,197.76 = 66,997.60/x
  3. Step 3: Cross multiply
    200,122.72x = 300,197.76 × 66,997.60
  4. Step 4: Simplify right side
    200,122.72x = 20,112,529,445.38
  5. Step 5: Solve for x
    x = 20,112,529,445.38/200,122.72
  6. Step 6: Final answer
    x = 100,500.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.